//一些基本样式 比如去掉list-style 去掉outline等
*{padding: 0;
    margin: 0;
box-sizing: border-box;
}

    html,body,head,div,ul,ol,dl,dt,dd,li,p,img,i,strong,em,b,a,span,table,tr,td,thead,tbody,tfoot,input,img,select,optgroup,option{
        margin: 0;
        padding: 0;
    }
    html,body{
        width: 100%;
        height: 100%;
        font-size: 16px;
        font-family: "微软雅黑";
        overflow-x: hidden;
        
    }
    html {
        overflow-y: scroll;
        }
        
        :root {
        overflow-y: auto;
        overflow-x: hidden;
        }
        
        :root body {
        position: absolute;
        }
        
        body {
        width: 100vw;
        overflow: hidden;
        }
    ul,ol,li{
        list-style: none;
    }
    i,em{
        font-style: normal;
    }
    b,strong{
        font-weight: normal;
    }
    h1,h2,h3,h4,h5,h6{
        font-weight: normal;
        font-size: 16px;
    }
    a{
        text-decoration: none;
        cursor: pointer;
        color: black;
    }
    .clear_float::after{
        content: "";
        height: 0;
        display: block;
        visibility: hidden;
        overflow: hidden;
        clear: both;
    }
    .clear_float{
        zoom: 1;
    }
    